Tony_F has it spot on; they were assembled out of a variety of BMC bits 'n pieces. It used the front panel and bonnet from the Riley 4/68, had Austin A55 Mk II tail-lights and fins. They built a ute version as well, and the one-off Freeway ute built in Sydney was very similar. It was based on a station wagon floor pan, like the Holden were doing at the same time. The two artwork drawings here were done locally.